Bel Canto PHONO3 User guide

Brand: Bel Canto

Model: PHONO3

Category: Audio amplifiers

Type: User guide

This manual is also suitable for

SET 40

Bel Canto Design PHONO3 is an analog preamplifier with which you can connect moving magnet or moving coil cartridges to your HiFi system. It offers different gain and load settings to match the characteristics of your cartridge and allows for precise RIAA equalization. Its single-stage amplifier and class-A operation ensure minimal signal degradation and maximum dynamic performance, and the high current output buffer drives any load. The Phono3 runs cool, so you can place it in many system locations without compromise.

Phono3

™

e.One

™

Series

Two Channel Analog

RIAA MM/MC Pre-Amplifier

Bel Canto Design, LTD.

221 North First Street

Minneapolis, MN 55401

Phone: (612) 317.4550

Fax: (612) 359.9358

www.belcantodesign.com

[email protected]

User's Guide

Please take a moment to fill out your warranty regis-

tration sheet. Returning this registration validates

your warranty. This information will not be sold or

released outside Bel Canto. Your comments and sug-

gestions help us continue to improve upon our prod-

ucts and services.

Bel Canto products are automatically covered by a

90 day factory warranty. With no additional cost,

you have the option to extend your warranty by com-

pleting and returning the enclosed warranty registra-

tion form within 30 days of purchase, along with a

copy of the original sales receipt from an authorized

Bel Canto dealer. This will ensure prompt warranty

coverage. This warranty is only valid to the original

owner who has returned the warranty sheet along

with a copy of the original sales receipt, covering all

internal parts and workmanship. This warranty is

void if damage is due to abuse, neglect, or unautho-

rized modification. The cost associated with the

return of this unit is the sole responsibility of the

owner.

Bel Canto products are uniquely identified with a

serial number on the back panel of each unit. This

number is required to validate your warranty. Please

reference the serial number if service is required. If

you have any questions, comments, or if we can be

of service, please contact us Monday through Friday

9:00 a.m. - 5:00 p.m. CT/USA.

Warranty Information

TABLE OF CONTENTS

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Initial Setup and Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 7

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Setup Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Thank you for purchasing the Bel Canto Design Phono3. Your Phono3 sets a benchmark

for design, quality and sonic performance, continuing Bel Canto’s heritage of musicality

and realism.

Phono3

Two-Channel Analog

Pre-Amplifier

The power supply on the Phono3 is pre-

set for the proper national voltage. The

power cable should have the correct

plug for your local power system. If you

believe this to not be true, please con-

tact your dealer immediately.

Warning !

not connect power to this

preamplifier yet!

This

preamplifier, like any electrical com-

ponent, can be dangerous and cause

injury unless correct handling proce-

dures are observed and used. Before

powering this preamplifier it is neces-

sary to read and follow proper setup

and procedures.

page 4

Unpacking your Phono3

Power Connection

Phono3 box contents include the following:

1 (one) - Phono3 Preamplifier

1 (one) - Phono3 User’s Guide

1 (one) - Power cord [6.6’ - 2 meters long]

1 (one) - Warranty Sheet

Carefully unpack each piece and check

for

shipping damage. If there is any

damage,

or if anything is missing,

please

contact your dealer, distributor or

Bel

Canto Design.

IMPO

RTANT: Save all packing

materials

as the packing is spe-

cially

designed to protect the

unit

during transportation or

shipping.

If the packaging becomes lost

damaged, please contact your dealer,

distributor or Bel Canto before attempt-

ing to transport your unit.

Because the Phono3 runs cool it can be

placed in many system locations without

compromise. We do not recommend

placing weights or other objects directly

on the Phono3. This may mar or scratch

the chassis finish. Do not use harsh

chemicals when cleaning the outside of

your Phono3.

Single Ended RCA input and output con-

nections are available. You can place

the Phono3 close to the turntable and

minimize the length of the low level inter-

connect from your cartridge. When

power is applied the front panel Blue

LED will light.

The Bel Canto Phono3 is designed to

provide low noise operation for moving

coil and moving magnet phono car-

tridges and high accuracy audio RIAA

equalization:

• All analog, low noise, low distortion

Class A integrated circuit architecture.

• High Current output buffer for driving

any load.

• 4-layer PC board design for superior

signal routing, grounding and power

supply routing.

• Latest generation of low-noise, low-dis-

tortion high speed audio amplifiers,

and output drivers provide superb meas-

ured and subjective audio quality.

• Multi-stage power supplies for precise

power to the sensitive analog circuitry

• Precision audio grade resistors and

precision metal foil film capacitors in

the audio signal path.

• Ultra low noise second stage dual inde-

pendant regulation for the analog

amplifier sections.

• Single-stage amplifier and classA oper-

ation to insure minimal signal degreda-

tion and maximum dynamic perform-

ance.

• Rear Panel gain and load switching

using precision sealed double wiping

gold contact switches.

Placement and Initial Setup

Design Features

IMPORTANT: Make all connections and settings before powering your unit.

Switch Settings

A set of 9 switches are available next to

each RCA input. These are used to setup

the optimum Gain, Resistive Load and

Capacitive Load for your cartridge.

Please refer to the manual for your car-

tridge for optimum gain and RC loading

recommendations.

Note that you should Mute or

Disconnect the Phono3 from your

preamplifier before making any

changes to the rear panel switch-

es.

We recommend using a small flat tip

screwdriver such as used for attaching

your cartridge to a tonearm or a similar

tool to change the switch positions.

Gain Setting Switches:

The Phono3 default gain setting will be

for typical high output cartridges, from

2mV to 5mV nominal output levels the

40 dB gain setting will be best. If you

are using a low output Moving Coil car-

tridge then switch each channel to the

60 dB setting by pressing the Gain

Switches to the DOWN position.

Insure that the power to the

Phono3 is disconnected and/or

the preamplifier is muted before

changing this setting to prevent a

large transient from damaging

your loudspeakers or power

amplifiers!

Input Resistor Load Setting

Switches:

The default input resistance is 47,000

(47K) ohms when all switches are in the

UP position. When a switch is set in the

DOWN position the corresponding resis-

tor value is placed in parallel to the 47K

resistor, resulting in a lower input resist-

ance. This means that a large range of

effective input resistance values can be

selected by selecting different parallel

combinations of resistance value. The

table on the following page can be used

to determine the switch positions for dif-

ferent input resistance values.

Input Capacitor Load Setting

Switches:

The default input capacitance value

when all catacitance switches are in the

UP is 150 picofarads (150pF).

Additional capacitance can be added to

this by selecting one of the capacitance

values by placing the corresponding

switch in the DOWN position: 100pF,

220pF or 390pF. These values will add

to the total input loading capacitance.

The table on the following page can be

used in setting the switches to achieve

the desired input capacitance.

Insure that both channels have

the same switch settings!

NOTE: The 2nd Switch next to the

gain switch is not used and can

remain in the UP position.

Phono3 Setup

Resistance Switch in Down Position Effective Load Resistance (ohms)

Selected Capacitor(s) Total Load Capacitance

None 150 pF

100 pF 250 pF

220 pF 370 pF

390 pF 540 pF

100 + 220 pF 470 pF

100 + 390 pF 640 pF

220 + 390 pF 760 pF

100 + 220 + 390 pF 860 pF

10000 1000 500 100 50

X 8250

X 980

X 495

X 100

X 50

X X 891

X X 331

X X 91

X X 83

X X 45

X X X 77

X X X 31

X X X X X 24

Phono3 Setup

Phono3 Back Panel

The Phono3’s sonic performance will

start to stabilize after 100 hours of

continuous power up. For optimum per-

formance keep the Phono3 powered up

at all times.

Conditioning

Phono3 Setup Notes:

________________________________________________

Phono3 User’s Guide 0207revA

page 10

Bandwidth • 1Hz-50KHz

RIAA Accuracy • 20Hz-20KHz +/- 0.2 dB

Signal to Noise Ratio 40 dB gain • >80 dB A weighted, re 5mV RMS in

Distortion @ 2 Volt RMS/1kHz • <0.01%

Maximum Output Level • 9.5 V RMS

Output Impedance • 100 Ohms Single Ended

Input Impedance • 47K Ohms Nominal (all Resistor Switches UP)

Gain Level Options • 40 dB (100X) and 60 dB (1000X)

Idle power draw • 10 Watts

Dimensions • 8.5” W x 12.5” D x 3” H (216 mm x 318 mm x 75 mm)

Weight: • 10lbs. (4.5 kg)

Phono3 Specifications

Bel Canto Design, LTD.

221 North First Street

Minneapolis, MN 55401

Phone: (612) 317.4550

Fax: (612) 359.9358

www.belcantodesign.com

[email protected]

Phono3™ is a trademark of Bel Canto Design, LTD

Bel Canto PHONO3 User guide

Brand: Bel Canto

Model: PHONO3

Category: Audio amplifiers

Type: User guide

This manual is also suitable for

SET 40

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Bel Canto PHONO3 User guide

This manual is also suitable for

Bel Canto PHONO3 User guide

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